1356990923807 has 4 divisors (see below), whose sum is σ = 1357136081400. Its totient is φ = 1356845766216.

The previous prime is 1356990923753. The next prime is 1356990923863. The reversal of 1356990923807 is 7083290996531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356990923807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1356990923807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356990923867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72564773 + ... + 72583470.

It is an arithmetic number, because the mean of its divisors is an integer number (339284020350).

Almost surely, 2^{1356990923807} is an apocalyptic number.

1356990923807 is a deficient number, since it is larger than the sum of its proper divisors (145157593).

1356990923807 is an equidigital number, since it uses as much as digits as its factorization.

1356990923807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145157592.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 1356990923807 in words is "one trillion, three hundred fifty-six billion, nine hundred ninety million, nine hundred twenty-three thousand, eight hundred seven".